Development and Evaluation of Electrospun Nanocomposite Coatings for Solar Membrane Distillation

[摘要] The objective of this research was to develop and evaluate a cost effective electrospun photothermal coating for solar membrane distillation (MD).Polyvinyl alcohol (PVA) with embedded carbon black (CB) nanoparticles were electrospun directly onto surface hydrophilized polyvinylidene fluoride (PVDF) membranes to impart a resistance free photothermal layer.PVA was chosen as a cost-effective alternative to previously reported photothermal coatings of Polyvinyl alcohol, N-methyl-4(4’-formylstyryl)pyridinium methosulfate acetal (SbQ-PVA) CB composites.To evaluate efficacy of photothermal coatings, both conventional MD and solar MD tests were carried out.Coatings were also tested for stability in feed solutions of varying NaCl concentrations and pH.PVA/CB coatings were found to have improved water stability compared to existing photothermal coatings and did not sacrifice MD performance.

[发布机构] Rice University

[效力级别] Membrane